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Grade CW6MC Nickel vs. ASTM A229 Spring Steel

Grade CW6MC nickel belongs to the nickel alloys classification, while ASTM A229 spring steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade CW6MC nickel and the bottom bar is ASTM A229 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 28
14
Fatigue Strength, MPa 210
710 to 790
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 79
72
Tensile Strength: Ultimate (UTS), MPa 540
1690 to 1890
Tensile Strength: Yield (Proof), MPa 310
1100 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Maximum Temperature: Mechanical, °C 980
400
Melting Completion (Liquidus), °C 1480
1450
Melting Onset (Solidus), °C 1430
1410
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 11
50
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 80
1.8
Density, g/cm3 8.6
7.8
Embodied Carbon, kg CO2/kg material 14
1.4
Embodied Energy, MJ/kg 200
19
Embodied Water, L/kg 290
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
200 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 240
3260 to 4080
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 18
60 to 67
Strength to Weight: Bending, points 17
40 to 43
Thermal Diffusivity, mm2/s 2.8
14
Thermal Shock Resistance, points 15
54 to 60

Alloy Composition

Carbon (C), % 0 to 0.060
0.55 to 0.85
Chromium (Cr), % 20 to 23
0
Iron (Fe), % 0 to 5.0
97.5 to 99
Manganese (Mn), % 0 to 1.0
0.3 to 1.2
Molybdenum (Mo), % 8.0 to 10
0
Nickel (Ni), % 55.4 to 68.9
0
Niobium (Nb), % 3.2 to 4.5
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.050